Sir Charles Knowles, An Account of the expedition to Carthagena…
“ This Thing, called a Bomb-Battery, was also a Mark of the Genius and Understanding of the Engineers. It was a Platform, laid behind a small rising Rock, open on all Sides, no Communication to it, either by Trench, Epaulment, or any Security whatsoever, that the Enemy saw every Man (from the Castle) that went in, or out, as they were obliged to pass over high Ground, to come at the Battery, and then it lay quite exposed to the Barradera Battery; so that the Shot fired from thence passed in at one End, and out at the other; and if they did no Execution there, were sure to do some in the Camp. ”
